Human ecology is inseparable from environmental ecology

For both popes [John Paul II and Benedict XVI], in fact "human ecology" in inseparable from environmental ecology, because respect for ourselves, for our sexuality, and for human life in all its stages and manifestations, is the manifestation of a respect for nature as such, which has been created in divine Wisdom: The book of nature is one and indivisible. It takes in not ony the environment, but also life, sexuality, marriage, family, social relations: in a word, integral human development. Our duties toward the environment are linked to our duties toward the human person, considered in himself and in relation to others. It would be wrong to uphold one set of duties while trampling on the other.

Stratford Caldecott,
Radiance of Being